/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.alipay.sofa.registry.server.session.store;

import com.alipay.sofa.registry.common.model.store.Watcher;

import java.util.Collection;
import java.util.Map;

/**
 *
 * @author shangyu.wh
 * @version $Id: SessionInterests.java, v 0.1 2017-11-30 15:53 shangyu.wh Exp $
 */
public interface Watchers extends DataManager<Watcher, String, String> {

    /**
     * query watcher by dataInfoID
     *
     * @param dataInfoId
     * @return
     */
    Collection<Watcher> getWatchers(String dataInfoId);

    /**
     * check watchers interest dataInfoId version
     * if not exist add
     * else check and update bigger one
     *
     * @param dataInfoId
     * @param version
     * @return
     */
    boolean checkWatcherVersions(String dataInfoId, Long version);

    Map<String, Map<String, Watcher>> getConnectWatchers();
}